Reversible rotary motor.



Patented Jan.14,1913.

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L. BRUN. REVERSIBLE ROTARY MOTOR. APPLICATION FILED FEB. 15, 1912.

1,050,760. Patented Jan. 14, 1913.

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LOUIS BRUN, or sT. CHAMOND, FRANCE.

REVERSIBLE ROTARY MOTOR.

Specification of Letters Patent.

Patented Jan. 14,1913.

Original application filed August 1, 1911, Serial No. 641,842. Divided and this application filed February 15, 1912. Serial No. 677,836.

To all whom it may concern Be it known that I, LOUIS BRUN, a citizen of the French Republic, and resident of St. Chamond, France, have invented certain new and useful Improvements in Reversible Rotary Motors, of which the following is a specification.

In the application for patent, filed August 1, 1911, Serial No. 641,842, from which the present application is divided, the pistons are moved by liquid or gaseous fluid. In this application the conversion of the reciprocating motion of the pistons into a rotary motion is obtained by providing integral hollow angular pistons, which operate in cylindrical bores, formed in two angularly disposed solid drums, the center lines of the various cylindrical bores of each group being parallel to the axis of rotation of the respective drum.

The present invention consists in provid ing a compound steam engine, the main advantages of which reside in the perfect equilibrium of all the parts in motion. This engine may be constructed to operate as an explosion or internal combustion engine.

The invention is shown in the accompanying drawing, in which Figure 1 is a longitudinal section of my improved engine. Fig. 2 is a side elevation of the main drum of the engine. Fig. 3 1s a sectional view on line .O-D of Fig. 2. Fig. 4 is a longitudinal section of a somewhat modified form of the engine shown in Fig. 1.

The compound steam engine shown 1n Fig. 1, comprises an angular housing formed in sections indicated at 29, 30, connected together by means of flanges 31, and forming a casing for the high pressure mechanism. Rigidly connected to the sec tions 29 and 30 are angular sections 33 and 34, which form a housing for the low pressure mechanism. Mounted in one angular portion of the casing formed by the sections 29 and 30, is a drum 35, which is mounted on ball bearings 36, and carries a central shaft 37. The drum 35 is provided with six parallel longitudinal bores 38, which receive the horizontal portions of hollow angular pistons 39, the vertical portions of which fit into corresponding bores 40, formed in a drum 41, arranged at right angles to the drum 35, and which is mounted on ball bearings 42. The hollow pistons 39, are

each provided with packing grooves 42, and with a central passage 43. The drum 35, is provided near its outer end with steam admission ports 44, which receive steam from a channel provided in a ring 45, surrounding the outer end portion of the drum, and with this channel, communicates a supply pipe 46.

Integral with the drum 41, is a drum 47 which is housed in the casing formed by the sections 33 and 34. The drum 47 is larger in diameter than the drum 41, hence a shoulder 48 is formed, and in said shoulder are openings 53. Under the shoulder, and in contact with it, is a hollow stationary distributing ring 49, the upper wall 50 of which fits snugly against the shoulder 48, while its inner wall 51 fits snugly against the drum 41. Opposite the wall 51, the drum 41 is provided with openings 52, which communicate with the cylindrical bores in said drum, and at the proper time they register with an opening provided in the wall 51 of the ring 49 to permit the steam to pass into the ring 49. The upper wall 50 of the ring 49 is formed with an admission port, with which the admission ports or openings 53 register at the required time. The ports 53 communicate with parallel cylindrical bores 54 in the drum 47. These bores 54 are larger in diameter than the bores 43 and receive the vertical portions of angular pistons 55, the horizontal portions of which fit in and reciprocate in cvlindrical bores 56 formed in a drum 57, which is mounted on ball bearings 58. The drum 57 is mounted on a power shaft 60, which extends beyond the housing, as shown.

Each angular piston 55 is provided with packing grooves 61, and a central passage 62. Near the lower end of the drum 47, are exhaust ports 63, which communicate with the bores 54, and at the proper time said ports register with ports 64, formed in a hollow ring 65, mounted in the casing formed by the sections 33 and 34.

The drum 57 is provided with exhaust ports 68, which communicate with the bores in said drum. The exhaust ports 68, register at the proper time with ports formed in a hollow ring 7 0, located in the housing. Communicating with the hollow ring 65 and the hollow ring 70, is a duct 67 having an through pipe 46, and ports 44, to the cylin drical bores 38, in the drum 35. The steam passes through the passages in the angular pistons 39, and exerts pressure on the two angular surfaces, which tends to force the pistons out of the cylindrical bores 38 and 40, and thereby drums and 41 are rotated. hen the drums have made one half revolution, the steam supply is cut off, and then ports 52, in the drum d1, communicate with the ports in the wall 51, of the hollow ring 4:9. The steam then passes through the ports 53, to the bores 54, of the drum d7, where expansion takes place. The expanded steam passes through the passages in the angular pistons 55, and the bores 56, in the drum 57. The steam being now confined, it acts on the inner angular surfaces of the walls of the passages in the angular piston 55, and moves the latter out of the bores 57 and 54C, and thereby rotates the drums 56 and 47. Upon the completion of about one half revolution of said drums, the ports 53 are closed, and ports 63 communicate with the escape ports in the ring 65, and the ports 68, communicate with the exhaust ports in the ring 70. The exhaust steam passes from rings 63 and 70, to the atmosphere through the duct 67 and outlet pipe 66.

In lieu of the structure shown in Figs. 1 to 3, I may employ the form of the inven tion shown in Fig. 4:. This construction is similar to that shown in Figs. 1 to 3, except that the ring 69 and the ports cooperating therewith are omitted. The passages 62 of the vertical portions of the angular pistons .55 which operate in the bores of the drum 47, are enlarged, and in each passage a movable plug 72, operates. Each plug is provided with packing grooves 73, and the plugs act as pistons. The dimensions of the enlarged passages 62', as well as the dimensions of the pistons 72, are such that the shifting of the plugs in the passages 62 produces a chamber, the area of which is equal to that of the chamber produced by the motion of the corresponding pistons in the bores 56 of the drum 57. The said bores 56 as well as'the passages 62 and 62 which J communicate with them are entirely filled with water, oil, or any other 11011-00111- pressible fluid. It will be understood however, that this fluid is confined between the end walls of the bores 56, and the ends of the plugs 72. It will therefore, be readilyseen that the steam entering the bores 54 of the drum 47 causes the pistons 55 to advance and also causes plugs 72 to move. When the steam acts on the plugs 72, the latter are forced into the pistons and against the fluid, and the latter then exerts pressure between the endwa ls of the b r s 58 th l s at the Pis ons a d rc s he la t r out of the bores, and causes-the drum 56 to rotate.

Ha ing ne ially escr be my said invention, what I claim and desire to secure by Letters Patent, is:

1. In a motor, the combination of a drum formed with bores having inlet openings to admit motive fluid thereto, a second drum arranged at an angle to the first mentioned drum, said second mentioned drum having bores formed with outlet openings, angular pistons operating in the bores of the first and second mentioned drums, an exhaust chamber located adjacent the outlet openings in the second i'nentioned drum, said exhaust chamber having openings which register with the openings in the said second mentioned drum and also having exhaust openings, a third and larger drum carried by the second mentioned drum, the third drum having bores adapted to register with the exhaust openings in the exhaust chamber, the third mentioned drum having exhaust openings in its periphery which communicate with the bores, a second exhaust chamber having ports with which the peripherical openings in the third mentioned drum communicate, a fourth drum angularly disposed with reference to the third mentioned drum and formed with bores, and angular shape hollow pistons engaging the bores of the third and fourth mentioned drums, the openings in the drums and exhaust chambers being arranged to admit the motive fluid from the bores of the second mentioned drum to the bores of the third mentioned drum to operate the angular pistons therein.

2. In a motor, the combination of a pair of drums formed with bores, a set of hollow angular pistons engaging in the bores of the two drums, means for admitting motive fluid to one drum to reciprocate the angular pistons, a second pair of drums formed with bores, one of said drums rotating with one of the first mentioned drums, a second set of angular hollow pistons engaging the bores of the said second mentioned drums, means for exhausting the fluid from the first to the second set of angular pistons after the first set of angular pistons has been reciprocated, and means for finally exhausting the motive fluid from said second set of pistons.

3. In a motor, the combination of a casmg, a pair of drums mounted in the casing, said drums having bores and being angularly disposed, a set of hollow angular pistons engaging the bores, a second pair of drums mounted in the casing and provided with bores, one of said second mentioned drums being integral with one of the first mentioned drums, a second set of hollow angular pistons engaging the bores of the second pair of drums, means for admitting fluid pressure to reciprocate the first set of angular pistons and rotate the drums, means for exhausting the motive fluid from the first pair of drums to the second pair of drums to reciprocate the second set of angular pistons, and rotate the drums, and means for finally exhausting the motive fluid from the second set of hollow pistons.

4. In a motor, the combination of a casing, a pair of drums mounted in the casing, said drums having bores and being angularly disposed, a set of hollow angular pistons engaging the bores, a second pair of drums mounted in the casing and provided with bores, one of said second mentioned drums being integral with one of the first mentioned drums, a second set of hollow angular pistons engaging the bores of the second pair of drums, a plug operating in each of the second set of angular pistons, there being fluid in the said second set of pistons between the plugs and the bores in one of the second set of drums, means for admitting motive fluid to the first set of drums to reciprocate the pistons engaging the bores therein, means for exhausting the motive fluid from the first set of pistons to one of the second set of pistons, whereby to exert pressure on the plugs which act on the fluid and reciprocate the second set of pistons, Enddmeans for finally exhausting the motive In testimony whereof I have hereunto set my hand in presence of two witnesses.

LOUIS BRUN.

Witnesses:

F. AsTALT'r, EDMOND A. BURRILL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

